import Vue from 'vue'
import Router from "vue-router"
import Login from "./components/Login.vue"
import Home from "./components/Home.vue"
import Welcome from "./components/Welcome.vue"
import Users from "./components/user/Users.vue"
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate.vue'
import Params from './components/goods/Params.vue'


Vue.use(Router);

const router = new Router({
  routes: [
    { path: "/", redirect: "/login" }, //重定向到Login地址
    { path: "/login", component: Login },
    {
      path: "/home",
      component: Home,
      redirect: "/welcome", //只要访问了home这个地址，就重定向到Welcome这个子路由地址
      children: [
        { path: '/welcome', component: Welcome },
        { path: '/users', component: Users },
        { path: '/rights', component: Rights },
        { path: '/roles', component: Roles },
        { path: '/categories', component: Cate },
        { path: '/params', component: Params }
      ],
    },
  ],
});

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转而来
  // next 是一个函数，表示放行
  //     next()  放行    next('/login')  强制跳转

  if (to.path === "/login") return next();
  // 获取token
  const tokenStr = window.sessionStorage.getItem("token");
  if (!tokenStr) return next("/login");
  next();
});

export default router;
